4g of airtel company is good and fastest speed from vodafone and I am fully satisfied with using this network with a better service last 2 yrs I am using this network in my company and I never get issues from this company and they provide speed in my office 40 mbps.
But now a days in my office not getting range of internet sometime the range will come then suddenly signal will go. I think that u providing me a 3g service plz do it proper range of internet connection.